Shock and impact initiation of a porous incendiary material

Davis, Jeffery J.; Woody, Diana L.; Miller, Philip J.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p771
Academic Journal
In order to better understand the deformation - initiation process, experiments have been performed in which an energetic composition containing KClO[SUB4] and Al/Mg was impact tested via gas gun at velocities ranging from 0.33-0.98 mm/μs at two densities: 84 and 70% TMD. An investigation of the importance of sample thickness was conducted with the 84% TMD samples. These tests used the observation of visible light emission as indication of reaction. This series of experiments complements a prior series in which PVDF pressure gauges were used to determine reaction threshold as well as the inert Hugoniot for this material. As expected, the light method determined a lower initiation threshold than the gauge work.


Related Articles

  • Computational modeling of heterogeneous reactive materials at the mesoscale. Baer, M. R. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p27 

    The mesoscopic processes of consolidation, deformation and reaction of shocked porous energetic materials are studied using shock physics analysis of impact on a collection of discrete "crystals." Highly resolved three-dimensional CTH simulations indicate that rapid deformation occurs at...

  • MODELING DYNAMIC DUCTILITY: AN EQUATION OF STATE FOR POROUS METALS. Colvin, Jeffrey D. // AIP Conference Proceedings;12/12/2007, Vol. 955 Issue 1, p31 

    Enhanced heating from shock compression of a porous material can potentially suppress or delay cracking of the material on subsequent expansion. In this paper we quantify the expected enhanced heating in an experiment in which a sector of a thin cylindrical shell is driven from the inside...

  • Mesoscale Descriptions of Shock-Loaded Heterogeneous Porous Materials. Baer, M. R.; Trott, W. M. // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p713 

    Recent simulations and experimental studies have revealed that dispersive waves are associated with impact on heterogeneous materials. The shock response includes fluctuating states and localization effects due to the interaction of multiple waves and deformation at material boundaries. These...

  • On the Construction of Effective Constitutive Relations for Porous Elastic Materials Subjected to Finite Deformations Including the Case of Their Superposition. Levin, V. A.; Zingerman, K. M. // Doklady Physics;Feb2002, Vol. 47 Issue 2, p136 

    Focuses on an approach to the construction of effective constitutive relations for porous nonlinearly elastic materials subjected to finite deformations. Solving problems on effective properties; Definition of an effective material; Formulas for the tensor transformation in the case of rigid...

  • Dynamic pore collapse in viscoplastic materials. Tong, W.; Ravichandran, G. // Journal of Applied Physics;8/15/1993, Vol. 74 Issue 4, p2425 

    Presents a study which examined the dynamic pore collapse in porous materials by analyzing the finite deformation of an elastic and viscoplastic spherical shell under impulsive pressure loading. Discussion on the dynamic consolidation of metallic and ceramic powders; Formulation of the finite...

  • Calculated Hugoniot Curves of Porous Metal: Copper, Nickel, and Molybdenum. Wang, Y.; Ahuja, R.; Johansson, B. // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p67 

    Calculated Hugoniots curves of porous metal Cu, Ni, and Mo are reported using the newly developed classical mean-field potential approach where both the cold and thermal parts of the Helmholtz free-energy are derived entirely from the 0-K total energies and electronic density of states...

  • Plastic Deformation in Laser-Induced Shock Compression of Monocrystalline Copper. Meyers, M. A.; Gregori, F.; Kad, B. K.; Schneider, M. S.; Kalantar, D. H.; Remington, B. A.; Wark, J. S.; Boehly, T.; Ravichandran, G. // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p619 

    Copper monocrystals were subjected to shock compression at pressures of 10-60 GPa by a short (3 ns initial) duration laser pulse. Transmission electron microscopy revealed features consistent with previous observations of shock-compressed copper, albeit at pulse durations in the Its regime. The...

  • Effective moduli of hyperelastic porous media at large deformation. Kakavas, P. A.; Anifantis, N. K. // Acta Mechanica;2003, Vol. 160 Issue 3/4, p127 

    Among the parameters affecting the overall material properties of porous media, the most significant involve the micromechanical morphology, the matrix material behavior and the applied load range. Considering a unit cell for the porous medium, several approaches of the material response are...

  • Mechanical behavior of porous zirconium dioxide under active deformation by compression. Buyakova, S. P.; Wei, Han; Dunmy, Li; Haiyun, Chen; Sablina, T. Yu.; Mel’nikov, A. G.; Kul’kov, S. N. // Technical Physics Letters;Sep99, Vol. 25 Issue 9, p695 

    The properties of the mechanical behavior of porous ceramic based on partially stabilized zirconium dioxide are studied. The special features of the mechanical behavior of ceramic with different degrees of porosity are determined. It is shown that three macrodeformation mechanisms are observed...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics